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QuizPrerenal AKI

A 79-year-old patient is admitted with vomiting and diarrhea for 3 days. BP is 84/50 mm Hg, creatinine increased from 0.9 to 2.1 mg/dL, and FENa is 0.4%. The APRN bases the plan of care on the knowledge that the most likely cause of kidney injury is:

AAcute tubular necrosis from prolonged ischemia

BPostrenal obstruction from prostatic hypertrophy

CAcute interstitial nephritis from a drug reaction

DRenal hypoperfusion from volume depletion

Incorrect

Hypotension after GI losses with a FENa under 1% means the tubules are intact and holding on to sodium. That's prerenal azotemia. ATN would show a FENa above 2% and muddy brown casts.

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